Results 71 to 80 of about 99,089 (292)

Swarm behavior of self-propelled rods and swimming flagella [PDF]

, 2010
Systems of self-propelled particles are known for their tendency to aggregate and to display swarm behavior. We investigate two model systems, self-propelled rods interacting via volume exclusion, and sinusoidally-beating flagella embedded in a fluid ...
G. Gompper, Gerhard Gompper, J. Gray, J. Gray, J. M. Kuner, Vincent Marceau, Yingzi Yang   +6 more
core   +2 more sources

The Sheathed Flagellum of Pseudomonas stizolobii [PDF]

Journal of General Microbiology, 1969
SUMMARY: Organisms of two strains of Pseudomonas stizolobii possessed one polar flagellum of unusual thickness. Negative-contrast staining and ultrathin sectioning indicated that the flagella are sheathed and are comparable in structure to the sheathed flagella described in Vibrio and Bdellovibrio.
Fuerst, J A, Hayward, A C
openaire   +3 more sources

Diversity of Pharmaceuticals Enhances Antibiotic Resistance in the Invertebrate Gut via Biofilm‐Mediated Mechanisms

Advanced Science, EarlyView.
Pharmaceutical diversity acts as an independent driver of antibiotic resistance in soil invertebrates. While bulk soil remains unaffected, the collembolan gut microbiome exhibits significant resistance gene enrichment under complex chemical exposure and diurnal warming.
Yi‐Fei Wang, Ya‐Ning Wang, Da Lin, Jia‐Yang Xu, Feng‐Yuan Qi, Hui‐Ling Cui, Hui‐Jie Lu, Min Qiao, Edward Topp, Dong Zhu, Matthias C. Rillig, Yong‐Guan Zhu   +11 more
wiley   +1 more source

Modelling Motility: The Mathematics of Spermatozoa

Frontiers in Cell and Developmental Biology, 2021
In one of the first examples of how mechanics can inform axonemal mechanism, Machin's study in the 1950s highlighted that observations of sperm motility cannot be explained by molecular motors in the cell membrane, but would instead require motors ...
Eamonn A. Gaffney, Kenta Ishimoto, Benjamin J. Walker   +2 more
doaj   +1 more source

Bend Propagation by a Sliding Filament Model for Flagella [PDF]

, 1971
1. If active sliding occurs between flagellar filaments, as suggested for the sliding filament mechanism for muscular contraction, it will generate positive bending in one direction along the flagellum and negative bending in the opposite direction ...
Brokaw, C. J.
core  

Length-dependent disassembly maintains four different flagellar lengths in Giardia. [PDF]

, 2019
With eight flagella of four different lengths, the parasitic protist Giardia is an ideal model to evaluate flagellar assembly and length regulation. To determine how four different flagellar lengths are maintained, we used live-cell quantitative imaging ...
Aurrecoechea, Avidor-Reiss, Avidor-Reiss, Ball, Barker, Berman, Bertiaux, Blaineau, Bradley, Briggs, Brooks, Buchel, Buisson, Chan, Chien, Cole, Cooper, Coyne, Craft, Dawson, Deane, Desai, Ellenberg, Engel, Fai, Gibson, Gourguechon, Hagen, Hao, Hardin, Helenius, Hendel, Hilton, Hoeng, Hunter, Ishikawa, Kozminski, Lechtreck, Lenaghan, Ludington, Ludington, Mangeol, Manning, Marshall, Marshall, McInally, McInally, Meng, Mohapatra, Naoz, Nohynková, Pazour, Pazour, Piao, Reiter, Rosenbaum, Sagolla, Schindelin, Shaner, Sung, Tamm, Vasudevan, Walczak, Wang, Wei, Williams, Wingfield, Wloga, Woessner, Wren   +69 more
core   +2 more sources

The flagellum in malarial parasites

Current Opinion in Microbiology, 2010
The malarial parasites assemble flagella exclusively during the formation of the male gamete in the midgut of the female mosquito vector. The observation of gamete formation ex vivo reported by Laveran (Laveran MA: De la nature parasitaire des accidents de l'impaludisme. Comptes Rendues De La Societe de Biologie.
Sinden, R, Talman, A, Marques, SR, Wass, M, Sternberg, M   +4 more
openaire   +2 more sources

PSMA8‐Containing 20S Proteasome Regulates Spermiogenesis and Male Fertility

Advanced Science, EarlyView.
PSMA8 assembles s20S proteasome that degrades specific substrates in elongating spermatids. Degradation of s20S‐substrates activates translation of FXR1‐target mRNAs, which are essential for mitochondrial sheath formation and sperm morphogenesis.
Huiwen Cao, Qianting Zhang, Wei Xu, Anxuan Fang, Haomang Xu, Cheng Qiu, Lugeng He, Chao Yu   +7 more
wiley   +1 more source

A short review on the morphology of Trypanosoma cruzi: from 1909 to 1999

Memorias do Instituto Oswaldo Cruz, 1999
The morphology of Trypanosoma cruzi is reviewed since the initial description of Giemsa-stained preparations by Carlos Chagas until the most recent micrographs obtained with freeze-fracture techniques.
Wanderley de Souza
doaj   +1 more source

Sperm design and variation in the New World blackbirds (Icteridae) [PDF]

, 2009
Post-copulatory sexual selection (PCSS) is thought to be one of the evolutionary forces responsible for the rapid and divergent evolution of sperm design. However, whereas in some taxa particular sperm traits are positively associated with PCSS, in other
AF Malo, AF Malo, AF Malo, BGM Jamieson, CK Cornwallis, CW LaMunyon, CW LaMunyon, D Urbach, DF Katz, DP Froman, DR Levitan, E García-Berthou, EH Morrow, EH Morrow, EJ Pellatt, EP Martins, G Arnqvist, G Burness, GA Parker, GA Parker, GA Parker, GA Parker, George M. Linz, GT Miller, HDM Moore, J Cohen, J Felsenstein, J Sivinski, JA Stoltz, JH Samour, JJL Higdon, JL Fitzpatrick, JL Fitzpatrick, JV Briskie, JV Briskie, L Locatello, LK Dybas, LZ Garamszegi, M Gomendio, M Pagel, MD Pagel, MJ Anderson, MJG Gage, MJG Gage, MJG Gage, MJG Gage, N Minoretti, O Kleven, PG Byrne, PH Harvey, PH Harvey, PI Ward, R Thornhill, RA Beatty, RA Beatty, RA Cardullo, RP Freckleton, RR Snook, S Balshine, S Calhim, S Calhim, S Humphries, S Immler, S Immler, S Immler, S Immler, S Lüpold, S Lüpold, S Pitnick, Stefan Lüpold, T Garland, T Pizzari, TE Pitcher, Tim R. Birkhead, TR Birkhead, TR Birkhead, WE Harris, WG Eberhard, WG Eberhard, WH Burrows, WV Holt, Å Franzén   +81 more
core   +2 more sources